Gearbox Software community manager Chris Faylor said in a post on the developer forums:

“Among the changes coming to PC are a new expanded inventory option that allows you to carry up to four weapons in the single-player campaign, Valve Anti-Cheat System (VAC) support, push-to-talk voice chat, the ability to adjust FOV plus other fixes and improvements that are still being tested.

“We’ll be sharing more details about the updates, including those coming to PlayStation 3 and Xbox 360, as they’re finalized. Thanks again for your support!”

Perhaps these additions will make the game somewhat more enjoyable. Our review of the game’s single player wasn’t all that favourable, so we’re a little glad that some improvements are being made.

So true! Currently jamming DNF and having only 2 weapons is balls – there’s even a hint during loading about using melee to save ammo. T_T. I recall Duke 3D having a full arsenal of weapons back in the day, really miss that. :/